Add EE feature spec

ee/spec/features/labels_hierarchy.rb

+require 'spec_helper'
+
+feature 'Labels Hierarchy', :js, :nested_groups do
+  let!(:user) { create(:user) }
+  let!(:grandparent) { create(:group) }
+  let!(:parent) { create(:group, parent: grandparent) }
+  let!(:child) { create(:group, parent: parent) }
+  let!(:project_1) { create(:project, namespace: child) }
+
+  let!(:grandparent_group_label) { create(:group_label, group: grandparent, title: 'Label_1') }
+  let!(:parent_group_label) { create(:group_label, group: parent, title: 'Label_2') }
+  let!(:child_group_label) { create(:group_label, group: child, title: 'Label_3') }
+  let!(:project_label_1) { create(:label, project: project_1, title: 'Label_4') }
+
+  let!(:labeled_issue_1) { create(:labeled_issue, project: project_1, labels: [grandparent_group_label, parent_group_label, child_group_label]) }
+  let!(:labeled_issue_2) { create(:labeled_issue, project: project_1, labels: [grandparent_group_label, parent_group_label]) }
+  let!(:labeled_issue_3) { create(:labeled_issue, project: project_1, labels: [grandparent_group_label, parent_group_label, child_group_label, project_label_1]) }
+  let!(:not_labeled) { create(:issue, project: project_1) }
+
+  before do
+    grandparent.add_owner(user)
+
+    sign_in(user)
+  end
+
+  shared_examples 'filter for scoped boards' do |project = false|
+    it 'scopes board to ancestor and descendant labels' do
+      labels = [grandparent_group_label, parent_group_label, child_group_label]
+      labels.push(project_label_1) if project
+
+      labels.each do |label|
+        page.within('.filter-dropdown-container') do
+          find('button', text: "Edit board").click
+        end
+
+        page.within('.js-labels-block') do
+          find('.edit-link').click
+        end
+
+        wait_for_requests
+
+        find('a.label-item', text: label.title).click
+
+        find('button', text: "Save changes").click
+
+        wait_for_requests
+
+        expect(page).to have_selector('.card', count: label.issues.count)
+
+        label.issues.each do |issue|
+          expect(page).to have_selector('.card-title') do |card|
+            expect(card).to have_selector('a', text:issue.title)
+          end
+        end
+      end
+    end
+  end
+
+  context 'scoped boards' do
+    context 'for group boards' do
+      let(:board) { create(:board, group: parent) }
+
+      before do
+        visit group_board_path(parent, board)
+
+        wait_for_requests
+      end
+
+      it_behaves_like 'filter for scoped boards'
+    end
+
+    context 'for project boards' do
+      let(:board) { create(:board, project: project_1) }
+
+      before do
+        visit project_board_path(project_1, board)
+
+        wait_for_requests
+      end
+
+      it_behaves_like 'filter for scoped boards', true
+    end
+  end
+end